Tasco 1575 User Manual
Page 125
RIGHT ANGLE PRISM 20MM X 28MM X 20MM
Made of BK-7 optical glass. Length & width are 20mm, and hypotenuse is
28mm.Right angle prisms are used to achieve a 90 degree light path bend.
The image will be erect and reverse left to right. Can also be used in com-
bination for image/beam displacement. These are unused and have surface
quality of 60-40, dimensional tolerance of +- 0.2 arc min, angle and pyramid
tolerance of +- 3 arc mins, and surface flatness of 1/2 wave.
L2005D $8.00
15MM PENTA PRISM
Penta prisms are 5 sided prisms that reflect light rays
thru a 90 degree angle by 2 reflections. They do not
invert or revert the image. The reflecting surfaces are
aluminized and protected by black paint. This one has
15mm square faces. These prisms also shorten the
length of an instrument. Made of BK7 optical glass
with 60/40 surface quality, dimensional tolerance of +-
0.10mm, angle tolerance of +-5 arc mins, and 1/2 wave flatness. Unused.
Edmund sells similar prism for $72.50
L2097D $25.00
25MM PENTA PRISM
Penta prisms are 5 sided prisms that reflect light rays
thru a 90 degree angle by 2 reflections. They do not
invert or revert the image. The reflecting surfaces are
aluminized and protected by black paint. This one has
25mm square faces. These prisms also shorten the
length of an instrument. Made of BK7 optical glass
with 60/40 surface quality, dimensional tolerance of +-
0.10mm, angle tolerance of +-5 arc mins, and 1/2 wave flatness. Unused.
Edmund sells similar prism for $99.00
L2098D $39.00
45 DEGREE REFLECTION PRISMS
These 3 sided prisms are used to deflect a beam thru a
45 degree angle. Shortest side is 19mm by 19mm, and
the longest side is 32.5mm long by 19mm wide. . Made
of BK7 optical glass with 60/40 surface quality, dimen-
sional tolerance of +-0.20mm, angle tolerance of +-5 arc
mins, and 1/2 wave flatness. The larger reflecting sur-
face is aluminized and protected by black paint.
Unused.
L2099D $7.50
Prisms - Page 123
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